I had considered taking a tripod, but there is so little room in there once they set up gear and get people in the room I did not want to take up too much room.If possible, take a tripod. Shoot one pic with a flash and one without. This gives you options on which one you want to work with. Also, software like Paint Shop Pro or PhotoShop will help a great deal wtih post production. GAMMA correction works better than adjusting the brightness for making a presentable picture.
I am planning on getting a diffuser and using the flash more next time - with some beforehand practicing of course.
Thanks for the suggestions on the software - I will check them out!